题目
99*38+3826*39+61*26用简便计算
提问时间:2020-08-03
答案
99*38+38
=38x(99+1)
=38x100
=3800
26*39+61*26
=26x(39+61)
=26x100
=2600
=38x(99+1)
=38x100
=3800
26*39+61*26
=26x(39+61)
=26x100
=2600
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